DE50304920D1 - Process for the preparation of isocyanates in the gas phase - Google Patents

Process for the preparation of isocyanates in the gas phase

Info

Publication number
DE50304920D1
DE50304920D1 DE50304920T DE50304920T DE50304920D1 DE 50304920 D1 DE50304920 D1 DE 50304920D1 DE 50304920 T DE50304920 T DE 50304920T DE 50304920 T DE50304920 T DE 50304920T DE 50304920 D1 DE50304920 D1 DE 50304920D1
Authority
DE
Germany
Prior art keywords
space
reactor
nozzle
flow
isocyanates
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE50304920T
Other languages
German (de)
Inventor
Marc Dr Jenne
Heiko Herold
Martin Dr Friedrich
Herbert Dr Stutz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Covestro Deutschland AG
Original Assignee
Bayer MaterialScience AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayer MaterialScience AG filed Critical Bayer MaterialScience AG
Priority to DE50304920T priority Critical patent/DE50304920D1/en
Application granted granted Critical
Publication of DE50304920D1 publication Critical patent/DE50304920D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C263/00—Preparation of derivatives of isocyanic acid
    • C07C263/10—Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The gas-phase phosgenation of di- or tri-amines to corresponding isocyanates is carried out in a tubular reactor with a central nozzle which is connected to the amine inlet by a flexible tube and centred in the reactor by at least two flow equalisers in the space between nozzle and reactor wall, the phosgene being fed into this annular space. A method for the production of di- and tri-isocyanates of formula R(NCO)n (I) by gas-phase phosgenation of di- or tri-amines of formula R(NH2)n (II), in which R = a (cyclo)aliphatic or aromatic hydrocarbon residue with up to 15 (preferably 4-13) carbons and with at least two carbons between two NCO groups; n = 2 or 3 The reaction is carried out in a tubular reactor (4) with a central nozzle (3) and an annular space (10) between (3) and the reactor wall; the nozzle (3) is centred in the reactor by means of at least two flow equalisers (7, 8, 9) in the space (10) and connected to one of the feed inlets (1) by a flexible tube (2), and there is an inlet (11) for the second feed stream in the space (10). The amine stream (II) is fed in through the nozzle (3) and the phosgene-containing stream is fed in via the space (10), while the rate of flow in the space (10) is evened out over the overall cross-section of the space (10) by the flow equalisers (7, 8, 9).
DE50304920T 2002-05-17 2003-05-05 Process for the preparation of isocyanates in the gas phase Expired - Lifetime DE50304920D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE50304920T DE50304920D1 (en) 2002-05-17 2003-05-05 Process for the preparation of isocyanates in the gas phase

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10222023A DE10222023A1 (en) 2002-05-17 2002-05-17 Process for the preparation of isocyanates in the gas phase
DE50304920T DE50304920D1 (en) 2002-05-17 2003-05-05 Process for the preparation of isocyanates in the gas phase

Publications (1)

Publication Number Publication Date
DE50304920D1 true DE50304920D1 (en) 2006-10-19

Family

ID=29265346

Family Applications (2)

Application Number Title Priority Date Filing Date
DE10222023A Withdrawn DE10222023A1 (en) 2002-05-17 2002-05-17 Process for the preparation of isocyanates in the gas phase
DE50304920T Expired - Lifetime DE50304920D1 (en) 2002-05-17 2003-05-05 Process for the preparation of isocyanates in the gas phase

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE10222023A Withdrawn DE10222023A1 (en) 2002-05-17 2002-05-17 Process for the preparation of isocyanates in the gas phase

Country Status (8)

Country Link
US (1) US6803482B2 (en)
EP (1) EP1362847B1 (en)
JP (1) JP4515044B2 (en)
CN (1) CN1263732C (en)
AT (1) ATE338745T1 (en)
DE (2) DE10222023A1 (en)
ES (1) ES2272834T3 (en)
HK (1) HK1060561A1 (en)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10349504A1 (en) * 2003-10-23 2005-05-25 Bayer Technology Services Gmbh Process for the preparation of isocyanates in the gas phase
DE102005037328A1 (en) 2005-08-04 2007-02-08 Basf Ag Process for the preparation of isocyanates
US8436204B2 (en) * 2006-07-13 2013-05-07 Basf Aktiengesellschaft Method for producing isocyanates
CN101153015B (en) * 2006-09-28 2010-06-16 宁波万华聚氨酯有限公司 Hole shooting flow type reactor and method for producing isocyanic ester by using the reactor
DE102006058633A1 (en) 2006-12-13 2008-06-19 Bayer Materialscience Ag Process for the preparation of isocyanates in the gas phase
DE102006058634A1 (en) 2006-12-13 2008-06-19 Bayer Materialscience Ag Producing isocyanates comprises reacting phosgene and amines, cooling the obtained gas mixture for the condensation of formed isocyanate and separating the non-condensed isocyanate from the mixture by washing
CN102850239B (en) 2007-01-17 2014-07-02 巴斯夫欧洲公司 Method for producing isocyanates
KR20100075863A (en) * 2007-08-30 2010-07-05 바스프 에스이 Method for producing isocyanates
WO2009027232A1 (en) * 2007-08-30 2009-03-05 Basf Se Method for producing isocyanates
PL2200976T3 (en) 2007-09-19 2012-04-30 Basf Se Process for preparing isocyanates
DE102007056511A1 (en) 2007-11-22 2009-05-28 Bayer Materialscience Ag Process for the preparation of aromatic diisocyanates in the gas phase
PT2307356E (en) * 2008-07-23 2012-07-31 Basf Se Method for producing isocyanates
PT2323973E (en) * 2008-08-07 2012-05-07 Basf Se Method for producing aromatic isocyanates
DE102008061686A1 (en) * 2008-12-11 2010-06-17 Bayer Materialscience Ag Process for the preparation of isocyanates in the gas phase
DE102008063728A1 (en) 2008-12-18 2010-06-24 Bayer Materialscience Ag Process for the preparation of isocyanates in the gas phase
DE102008063991A1 (en) 2008-12-19 2010-06-24 Bayer Materialscience Ag Process for the preparation of isocyanates in the gas phase
DE102009032413A1 (en) 2009-07-09 2011-01-13 Bayer Materialscience Ag Process for the preparation of isocyanates
DE102009032414A1 (en) 2009-07-09 2011-01-13 Bayer Materialscience Ag Process for the preparation of isocyanates in the gas phase
US8981145B2 (en) 2010-03-18 2015-03-17 Basf Se Process for preparing isocyanates
KR20130029064A (en) 2010-03-18 2013-03-21 바스프 에스이 Method for producing isocyanates
CN103339105B (en) * 2010-10-14 2016-01-06 巴斯夫欧洲公司 Prepare the method for isocyanic ester
US9321720B2 (en) 2010-10-14 2016-04-26 Basf Se Process for preparing isocyanates
CN102101038A (en) * 2010-11-10 2011-06-22 姚光纯 Reactor bottom rectifier
PL214498B1 (en) 2010-12-10 2013-08-30 Inst Chemii Przemyslowej Im Prof Ignacego Moscickiego Method for isolating the products of toluilenodiamine (TDA) phosgenation in the gas phase during preparation of toluilenodiizocyanate (TDI)
PL393216A1 (en) 2010-12-10 2012-06-18 Zakłady Chemiczne Zachem Spółka Akcyjna Process for the preparation of toluilenodiizocyanate (TDI) by phosgenation of toluilenodiamine (TDA) in the gas phase and a device for the preparation of toluilenodiizocyanate (TDI) by phosgenation of toluilenodiamine (TDA) in the gas phase
JP5793922B2 (en) * 2011-04-06 2015-10-14 三菱レイヨン株式会社 Heterogeneous liquid phase reaction method
CN103224457B (en) * 2013-04-15 2015-02-25 湘潭大学 Method and device for continuous preparation of carbamyl chloride
EP2829533A1 (en) 2013-07-26 2015-01-28 Bayer MaterialScience AG Method for making isocyanates
CN107667089B (en) 2015-06-12 2021-02-26 科思创德国股份有限公司 Method for producing diisocyanates in the gas phase
US10280135B2 (en) 2015-09-30 2019-05-07 Covestro Deutschland Ag Method for producing isocyanates
KR102596786B1 (en) 2016-12-21 2023-11-02 코베스트로 도이칠란트 아게 How to Make Isocyanate
US10858311B2 (en) 2017-06-08 2020-12-08 Covestro Deutschland Ag Method for producing isocyanates
EP3634947B1 (en) 2017-06-08 2022-09-07 Covestro Intellectual Property GmbH & Co. KG Method for the production of isocyanates in the gasphase
JP2022547814A (en) 2019-09-17 2022-11-16 コベストロ、ドイチュラント、アクチエンゲゼルシャフト Method for producing isocyanate
KR20230109176A (en) 2020-11-23 2023-07-19 바스프 에스이 Method for producing isocyanates
EP4296260A1 (en) 2022-06-22 2023-12-27 Covestro Deutschland AG Preparation of specific isocyanates by co-phosgenating
EP4296261A1 (en) 2022-06-22 2023-12-27 Covestro Deutschland AG Method and device for producing isocyanates

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3714439A1 (en) * 1987-04-30 1988-11-10 Bayer Ag METHOD FOR PRODUCING (CYCLO) ALIPHATIC DIISOCYANATES
DE4217019A1 (en) * 1992-05-22 1993-11-25 Bayer Ag Process for the preparation of aromatic diisocyanates
FR2697017B1 (en) * 1992-10-16 1995-01-06 Rhone Poulenc Chimie Process for the preparation of compounds of the aromatic isocyanate type in the gas phase.

Also Published As

Publication number Publication date
EP1362847A2 (en) 2003-11-19
ATE338745T1 (en) 2006-09-15
CN1263732C (en) 2006-07-12
US20030216597A1 (en) 2003-11-20
CN1458150A (en) 2003-11-26
JP2004067669A (en) 2004-03-04
ES2272834T3 (en) 2007-05-01
HK1060561A1 (en) 2004-08-13
DE10222023A1 (en) 2003-11-27
JP4515044B2 (en) 2010-07-28
EP1362847A3 (en) 2004-02-04
US6803482B2 (en) 2004-10-12
EP1362847B1 (en) 2006-09-06

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